C语言和设计模式（继承、封装、多态）

#include<stdio.h>
//多态
typedef struct Human {
    int age;
    void(*say)(void);
}Human;
Human newHuman() {
    Human human;
    human.age = 1;
    return human;
}
typedef struct Student {
    Human human;
    
}Student;
void studentSay(void) {
    printf("studentSay
");
}
Student newStudent() {
    Student s;
    s.human = newHuman();
    s.human.say = studentSay;
    return s;
}
typedef struct Teacher {
    Human human;
    
}Teacher;
void teacherSay(void) {
    printf("teacherSay
");
}
Teacher newTeacher() {
    Teacher t;
    t.human = newHuman();
    t.human.say = teacherSay;
    return t;
}
void function(Human human) {
    human.say();
    printf("age is:%d
",human.age);
}
int main() {
    Teacher t = newTeacher();
    Student s = newStudent();
    t.human.age = 12;
    s.human.age = 33;
    
    function(s.human);
    function(t.human);


    

    return 1;
}

Fist day